K. Watanabe และ T. Yamamoto and T. Sudo. (2017) Development of Steel Pipe Pile Combined with Ground Improvement in Narrow Spaces. <i>The Geotechnical Engineering Journal of the SEAGS & AGSSEA</i>, <i>48</i>(3), 65-72.K. Watanabe และ T. Yamamoto and T. Sudo. "Development of Steel Pipe Pile Combined with Ground Improvement in Narrow Spaces". The Geotechnical Engineering Journal of the SEAGS & AGSSEA 48 (2017):65-72.K. Watanabe และ T. Yamamoto and T. Sudo. Development of Steel Pipe Pile Combined with Ground Improvement in Narrow Spaces. Southeast Asian Geotechnical Society:ม.ป.ท. 2017.